The issue of voluntary part-time relates to Obamacare because one of the main purposes was to allow people to get insurance outside of employment.
【句子分析】
单词短语：
voluntary：自愿的
insurance：保险
【句式结构】
The issue of voluntary part-time relates to Obamacare because one of the main purposes was to allow people to get insurance outside of employment（原因状语从句）.
